Acetic acid |
NO.81L |
Measuring Range |
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Number of Pump Strokes |
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Correction Factor |
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Sampling Time | 1.5 minutes per pump stroke | |||
Detecting Limit | 0.05 ppm (n=2) | |||
Colour Change | Pink → Pale Yellow | |||
Reaction Principle | CH3CO2H + Base → Reaction product | |||
Coefficient of Variation | 10% (for 0.25 to 3 ppm), 5% (for 3 to 10 ppm) | |||
Shelf Life | 2 Years | |||
Corrections for temperature & humidity | Temperature correction is necessary | |||
Store the tubes at in the refrigerator to keep at 10ºC(50ºF) or below. |
Substance | Concentration | Interference | Change colour by itself to |
Ammonia | Higher than 2 times | No | |
Chlorine, sulphur dioxide, Nitrogen dioxide | + | Pale Yellow | |
Formic Acid, Acetic anhydride | + | Pale Yellow |
Substance | Correction Factor | No. of pump strokes | Measuring Range |
Acetic anhydride | Factor: 0.6 | 1 | 0.15 to 6 ppm |
Acrylic acid | Factor: 1.8 | 1 | 0.45 to 18 ppm |
Butyric acid | Factor:1.3 | 1 | 0.325 to 13 ppm |
Formic acid | Factor: 2.0 | 1 | 0.5 to 20 ppm |
Isovaleric acid | Factor: 1.5 | 1 | 0.38 to 15 ppm |
Methacrylic acid | Factor 1.4 | 1 | 0.35 to 14 ppm |
Propionic acid | Factor: 1.0 | 1 | 0.25 to 10 ppm |
Valeric acid | Factor: 1.5 | 1 | 0.38 to 15 ppm |
Calibration gas generation | Diffusion tube method |
TLV-TWA | TLV-STEL | Explosive range |
- | 15 ppm | - |